1 /*
2  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
3  *           (C) 1997 Torben Weis (weis@kde.org)
4  *           (C) 1998 Waldo Bastian (bastian@kde.org)
5  *           (C) 1999 Lars Knoll (knoll@kde.org)
6  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
7  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Library General Public
11  * License as published by the Free Software Foundation; either
12  * version 2 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17  * Library General Public License for more details.
18  *
19  * You should have received a copy of the GNU Library General Public License
20  * along with this library; see the file COPYING.LIB.  If not, write to
21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
22  * Boston, MA 02110-1301, USA.
23  */
24 
25 #ifndef RenderTableSection_h
26 #define RenderTableSection_h
27 
28 #include "RenderTable.h"
29 #include <wtf/Vector.h>
30 
31 namespace WebCore {
32 
33 class RenderTableCell;
34 class RenderTableRow;
35 
36 class RenderTableSection : public RenderBox {
37 public:
38     RenderTableSection(Node*);
39     virtual ~RenderTableSection();
40 
children()41     const RenderObjectChildList* children() const { return &m_children; }
children()42     RenderObjectChildList* children() { return &m_children; }
43 
44     virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);
45 
46     virtual int firstLineBoxBaseline() const;
47 
48     void addCell(RenderTableCell*, RenderTableRow* row);
49 
50     void setCellLogicalWidths();
51     int calcRowLogicalHeight();
52     int layoutRows(int logicalHeight, int headHeight, int footHeight);
53 
table()54     RenderTable* table() const { return toRenderTable(parent()); }
55 
56     struct CellStruct {
57         Vector<RenderTableCell*, 1> cells;
58         bool inColSpan; // true for columns after the first in a colspan
59 
CellStructCellStruct60         CellStruct():
61           inColSpan(false) {}
62 
primaryCellCellStruct63         RenderTableCell* primaryCell()
64         {
65             return hasCells() ? cells[cells.size() - 1] : 0;
66         }
67 
primaryCellCellStruct68         const RenderTableCell* primaryCell() const
69         {
70             return hasCells() ? cells[cells.size() - 1] : 0;
71         }
72 
hasCellsCellStruct73         bool hasCells() const { return cells.size() > 0; }
74     };
75 
76     typedef Vector<CellStruct> Row;
77 
78     struct RowStruct {
79         Row* row;
80         RenderTableRow* rowRenderer;
81         int baseline;
82         Length logicalHeight;
83     };
84 
cellAt(int row,int col)85     CellStruct& cellAt(int row,  int col) { return (*m_grid[row].row)[col]; }
cellAt(int row,int col)86     const CellStruct& cellAt(int row, int col) const { return (*m_grid[row].row)[col]; }
primaryCellAt(int row,int col)87     RenderTableCell* primaryCellAt(int row, int col)
88     {
89         CellStruct& c = (*m_grid[row].row)[col];
90         return c.primaryCell();
91     }
92 
93     void appendColumn(int pos);
94     void splitColumn(int pos, int first);
95 
96     int calcOuterBorderBefore() const;
97     int calcOuterBorderAfter() const;
98     int calcOuterBorderStart() const;
99     int calcOuterBorderEnd() const;
100     void recalcOuterBorder();
101 
outerBorderBefore()102     int outerBorderBefore() const { return m_outerBorderBefore; }
outerBorderAfter()103     int outerBorderAfter() const { return m_outerBorderAfter; }
outerBorderStart()104     int outerBorderStart() const { return m_outerBorderStart; }
outerBorderEnd()105     int outerBorderEnd() const { return m_outerBorderEnd; }
106 
numRows()107     int numRows() const { return m_gridRows; }
108     int numColumns() const;
109     void recalcCells();
recalcCellsIfNeeded()110     void recalcCellsIfNeeded()
111     {
112         if (m_needsCellRecalc)
113             recalcCells();
114     }
115 
needsCellRecalc()116     bool needsCellRecalc() const { return m_needsCellRecalc; }
117     void setNeedsCellRecalc();
118 
getBaseline(int row)119     int getBaseline(int row) { return m_grid[row].baseline; }
120 
121 protected:
122     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
123 
124 private:
virtualChildren()125     virtual RenderObjectChildList* virtualChildren() { return children(); }
virtualChildren()126     virtual const RenderObjectChildList* virtualChildren() const { return children(); }
127 
renderName()128     virtual const char* renderName() const { return isAnonymous() ? "RenderTableSection (anonymous)" : "RenderTableSection"; }
129 
isTableSection()130     virtual bool isTableSection() const { return true; }
131 
132     virtual void destroy();
133 
134     virtual void layout();
135 
136     virtual void removeChild(RenderObject* oldChild);
137 
138     virtual void paint(PaintInfo&, int tx, int ty);
139     virtual void paintCell(RenderTableCell*, PaintInfo&, int tx, int ty);
140     virtual void paintObject(PaintInfo&, int tx, int ty);
141 
142     virtual void imageChanged(WrappedImagePtr, const IntRect* = 0);
143 
144     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
145 
146     bool ensureRows(int);
147     void clearGrid();
148 
149     RenderObjectChildList m_children;
150 
151     Vector<RowStruct> m_grid;
152     Vector<int> m_rowPos;
153 
154     int m_gridRows;
155 
156     // the current insertion position
157     int m_cCol;
158     int m_cRow;
159 
160     int m_outerBorderStart;
161     int m_outerBorderEnd;
162     int m_outerBorderBefore;
163     int m_outerBorderAfter;
164 
165     bool m_needsCellRecalc;
166     bool m_hasOverflowingCell;
167 
168     bool m_hasMultipleCellLevels;
169 };
170 
toRenderTableSection(RenderObject * object)171 inline RenderTableSection* toRenderTableSection(RenderObject* object)
172 {
173     ASSERT(!object || object->isTableSection());
174     return static_cast<RenderTableSection*>(object);
175 }
176 
toRenderTableSection(const RenderObject * object)177 inline const RenderTableSection* toRenderTableSection(const RenderObject* object)
178 {
179     ASSERT(!object || object->isTableSection());
180     return static_cast<const RenderTableSection*>(object);
181 }
182 
183 // This will catch anyone doing an unnecessary cast.
184 void toRenderTableSection(const RenderTableSection*);
185 
186 } // namespace WebCore
187 
188 #endif // RenderTableSection_h
189